From the DVD - Library ed.
V. 1: lecture 1-2. Introduction and words and music ; lecture 3-4. A brief history of vocal expression in music ; lecture 5-8. The invention of opera and Monteverdi's Orfeo
volume 2.: lecture 9-12. The growth of opera, the development of Italian opera seria, and Mozart's Idomeneo ; lecture 13-16. The rise of opera buffa and Mozart's the Marriage of Figaro
volume 3.: lecture 17-18. The bel canto style and Rossini's the Barber of Seville lecture 19-22. Verdi and Otello ; lecture 23-24. French opera
volume 4: lecture 25. German opera comes of age ; lecture 26-27. Richard Wagner and Tristan und Isolde ; lecture 28. Late Romantic German opera: Richard Strauss and Salome ; lecture 29-30. Russian opera ; lecture 31-32. Verismo, Puccini, and Tosca.